Efficiency with and without DPIN_DRV_MODE MOSFET
While writing some custom firmware for the HexBright, I came across the DPIN_DRV_MODE pin, which, as I gather, controls a MOSFET that supplies extra power to the LED. Thus, setting DPIN_DRV_EN to 255 without the MOSFET is medium light in the factory firmware, where 255 with the MOSFET enabled is full power.
In the fader demo, DPIN_DRV_MODE is left enabled and the value of DPIN_DRV_EN is the only thing changed. This results in a smooth fade.
However, my question is this. For identical brightness output with the MOSFET enabled or disabled (i.e. 255/Off vs. some lower value/On) is there any significant loss associated with using the MOSFET? The reason I ask is because I want to write smooth fading transitions but I don't want to lose efficiency/runtime on the low end by leaving DPIN_DRV_MODE enabled, and I don't have the equipment to test current draw.
Is this a good question?